diff options
| -rw-r--r-- | drivers/iio/accel/bma180.c | 54 |
1 files changed, 43 insertions, 11 deletions
diff --git a/drivers/iio/accel/bma180.c b/drivers/iio/accel/bma180.c index f4d280456dd7..a543cffb4ec3 100644 --- a/drivers/iio/accel/bma180.c +++ b/drivers/iio/accel/bma180.c @@ -85,12 +85,6 @@ struct bma180_part_info { #define BMA180_DEF_BW 20 #define BMA180_DEF_SCALE 2452 -/* Available values for sysfs */ -#define BMA180_FLP_FREQ_AVAILABLE \ - "10 20 40 75 150 300" -#define BMA180_SCALE_AVAILABLE \ - "0.001275 0.001863 0.002452 0.003727 0.004903 0.009709 0.019417" - struct bma180_data { struct i2c_client *client; struct iio_trigger *trig; @@ -349,13 +343,51 @@ err: dev_err(&data->client->dev, "failed to disable the chip\n"); } -static IIO_CONST_ATTR(in_accel_filter_low_pass_3db_frequency_available, - BMA180_FLP_FREQ_AVAILABLE); -static IIO_CONST_ATTR(in_accel_scale_available, BMA180_SCALE_AVAILABLE); +static ssize_t bma180_show_avail(char *buf, const int *vals, unsigned n, + bool micros) +{ + size_t len = 0; + int i; + + for (i = 0; i < n; i++) { + if (!vals[i]) + continue; + len += scnprintf(buf + len, PAGE_SIZE - len, + micros ? "0.%06d " : "%d ", vals[i]); + } + buf[len - 1] = '\n'; + + return len; +} + +static ssize_t bma180_show_filter_freq_avail(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct bma180_data *data = iio_priv(dev_to_iio_dev(dev)); + + return bma180_show_avail(buf, data->part_info->bw_table, + data->part_info->num_bw, false); +} + +static ssize_t bma180_show_scale_avail(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct bma180_data *data = iio_priv(dev_to_iio_dev(dev)); + + return bma180_show_avail(buf, data->part_info->scale_table, + data->part_info->num_scales, true); +} + +static IIO_DEVICE_ATTR(in_accel_filter_low_pass_3db_frequency_available, + S_IRUGO, bma180_show_filter_freq_avail, NULL, 0); + +static IIO_DEVICE_ATTR(in_accel_scale_available, + S_IRUGO, bma180_show_scale_avail, NULL, 0); static struct attribute *bma180_attributes[] = { - &iio_const_attr_in_accel_filter_low_pass_3db_frequency_available.dev_attr.attr, - &iio_const_attr_in_accel_scale_available.dev_attr.attr, + &iio_dev_attr_in_accel_filter_low_pass_3db_frequency_available. + dev_attr.attr, + &iio_dev_attr_in_accel_scale_available.dev_attr.attr, NULL, }; |